Frank at All Pro Pest Control. He's a WS guy and is inexpensive and honest. 206-762-3959

He got rid of our ants in just about an hour, in a way that was safe for a household with nosy cats who like to investigate everything. He took time to educate me on the type of ants we had, and how to keep them away. He did monthly service for a couple of months in order to ensure they didn't return, and then we've moved to quarterly preventive service ongoing.